Installing AVG PC TuneUp

Tried to screenshot from CONTROL PANEL, but didn't work…

It says:

Windows 7 Home Premium 2009

32 bit operating system

Hello Sam,

Please accept our apologies for the inconvenience caused.
We request you to check & mention the Service Pack version of your Windows 7 operating system.
Awaiting your response.

I've just paid my annual subscription and tried to download and saying ERROR 45056 - the operating system in not supported.

I have not updated my PC in years and Windows 7 !!!

HELP - How can I rectify this without any extra cost ???

Thank you for the information.

We will help you to resolve the issue.

We have offered our additional support through email. Please check for the email and connect back to us as soon as possible.

Hello Sam,

Please accept our apologies for the inconvenience caused.
We request you to check & mention the Service Pack version of your Windows 7 operating system.
Awaiting your response.